Struct IndentWriter 

pub struct IndentWriter<'i, W> { /* private fields */ }

A fmt::Write writer with indentation memory useful for formatting structured data.

Implementations

impl<'i, W> IndentWriter<'i, W>

pub fn new(indent: &'i str, writer: W) -> Self

Create a new writer from an existing writer and a proposed indent string.

The writer will start with no indent. Use IndentWriter::indent to create an indented writer at the next level. Drop the writer returned from IndentWriter::indent to return the current level.

pub fn indent_str(&self) -> &str

Get the string used to indent each level.

impl<'i, W: Write> IndentWriter<'i, W>

pub fn indent(&mut self) -> IndentWriter<'i, &mut IndentWriter<'i, W>>

Produce a new IndentWriter at one deeper indent level.

pub fn indent_skip_first( &mut self, ) -> IndentWriter<'i, &mut IndentWriter<'i, W>>

Produce a new IndentWriter at one deeper indent level, but don’t indent the current line.

This produces a “hanging indent” where only the second line starts at the new indentation.

pub fn write_json<T: Serialize>(&mut self, data: &T) -> Result

Write an object as prettified JSON

This will use the specified indent string to pretty-format the JSON via serde_json::to_string_pretty.

Trait Implementations

impl<'i, W> Debug for IndentWriter<'i, W>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'i, W> Write for IndentWriter<'i, W>

where W: Write,

fn write_str(&mut self, s: &str) -> Result

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result

Writes a char into this writer, returning whether the write succeeded.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Glue for usage of the write! macro with implementors of this trait.